Pressurized formation clamping device for lithium ion battery

Abstract

The utility model relates to a kind of lithium ion battery pressurization formation clamping devices. Lithium ion battery pressurization formation clamping device includes two oppositely arranged clamping units, each clamping unit includes: workbench;First moving mechanism, along first direction is set in the side of workbench;Second moving mechanism, along second direction is set in the side of first moving mechanism away from workbench, and second moving mechanism can slide along first moving mechanism;Third moving mechanism can slide along second moving mechanism;First lifting mechanism can move in the direction of approaching or away from workbench;First clamping plate is used to abut with tab;Second lifting mechanism can move in the direction of approaching or away from workbench;And second clamping plate is used to abut with battery cell. The lithium ion battery pressurization formation clamping device of the utility model technical scheme can effectively adapt to the battery cell of multiple thickness specifications and not easy to damage, be conducive to wide application.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a lithium-ion battery pressurized formation clamping device. Background Technology

[0002] In the manufacturing process of pouch lithium-ion batteries, formation and capacity grading are crucial steps. Formation uses electrical energy to activate the internal components of the battery, forming an SEI film on the negative electrode. High-quality formation equipment ensures good charge-discharge performance and cycle life. Capacity grading involves subjecting the activated batteries to several full-load charge-discharge cycles, testing AC / DC internal resistance, charge-discharge voltage, constant current discharge, constant voltage discharge, and constant power discharge curves. Batteries are then grouped to select those with similar electrical parameters for series and parallel applications, reducing the bottleneck effect in battery combinations.

[0003] Traditional tab clamping devices in pressurized formation of pouch lithium-ion batteries include fixed-spacing and spring-plate types. However, the former has certain requirements on the thickness of the lithium battery and cannot effectively adapt to cells of various thicknesses; while the latter has a higher tolerance for the thickness of pouch cells, the spring plates of the tab clamping device are prone to deformation and damage when the formation pressure is high. Utility Model Content

[0004] Therefore, it is necessary to provide a lithium-ion battery pressurization and clamping device that can effectively adapt to battery cells of various thicknesses and is not easily damaged.

[0005] A lithium-ion battery pressurized formation clamping device includes two clamping units arranged opposite each other, each clamping unit comprising:

[0006] Workbench;

[0007] A first moving mechanism is disposed on one side of the worktable along a first direction;

[0008] The second moving mechanism is disposed along the second direction on the side of the first moving mechanism away from the worktable, and the second moving mechanism can slide along the first moving mechanism;

[0009] A third moving mechanism is disposed on one side of the second moving mechanism, and the third moving mechanism can slide along the second moving mechanism;

[0010] The first lifting mechanism is fixed to one side of the third moving mechanism, and the first lifting mechanism can move in a direction that is closer to or farther away from the worktable;

[0011] The first clamping plate is used to abut against the electrode tab, and the first clamping plate is fixed to the side of the first lifting mechanism away from the worktable;

[0012] A second lifting mechanism is disposed on one side of the worktable, and the second lifting mechanism can move in a direction toward or away from the worktable; and

[0013] The second clamping plate is used to abut against the battery cell, and the second clamping plate is fixed to the side of the second lifting mechanism away from the worktable.

[0014] When applying the lithium-ion battery pressurized formation clamping device of this utility model, on the one hand, the second moving mechanism can slide along the first moving mechanism, and the second moving mechanism is slidably connected to the third moving mechanism, which can drive the first lifting mechanism to move, thereby driving the first clamping plate to move. The combination of the first moving mechanism, the second moving mechanism, and the third moving mechanism enables the lithium-ion battery pressurized formation clamping device of this utility model to adapt to cells of different sizes. On the other hand, the first lifting mechanism and the second lifting mechanism can respectively drive the first clamping plate and the second clamping plate to contact the tabs and the cells, thereby adapting to tabs and cells of different thicknesses. Therefore, the lithium-ion battery pressurized formation clamping device of this utility model can effectively adapt to cells of various thicknesses and is not easily damaged, which is beneficial for its widespread application.

[0015] In one embodiment, there are two first moving mechanisms, and the two first moving mechanisms are respectively located at both ends of the second moving mechanism along the second direction.

[0016] In one embodiment, the first moving mechanism includes a slide rail and a slider, the slide rail being fixed to one side of the worktable and the slider being slidably connected to the side of the slide rail away from the worktable.

[0017] In one embodiment, the third moving mechanism includes a fixedly connected base and a side plate, the base being disposed close to the worktable, and the side plate being slidable along the second moving mechanism.

[0018] In one embodiment, one end of the first lifting mechanism is fixed to the base of the third moving mechanism.

[0019] In one embodiment, the first lifting mechanism is a first cylinder, which includes a first connecting rod and is fixedly connected to the first clamping plate.

[0020] In one embodiment, the second lifting mechanism is fixed to the worktable.

[0021] In one embodiment, a fourth moving mechanism is further included, disposed on one side of the second moving mechanism, and the fourth moving mechanism is slidable along the second moving mechanism; the second lifting mechanism is fixed to the fourth moving mechanism.

[0022] In one embodiment, the second lifting mechanism is a second cylinder, which includes a second connecting rod and is fixedly connected to the second clamping plate.

[0023] In one embodiment, the device further includes two first fixing members for fixing the third moving mechanism, and the two first fixing members are respectively disposed on both sides of the third moving mechanism. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a lithium-ion battery pressurization formation clamping device according to one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the clamping unit in a lithium-ion battery pressurization formation clamping device according to one embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the clamping unit in a lithium-ion battery pressurization formation clamping device according to another embodiment of the present invention. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figure 1 and Figure 2 The lithium-ion battery pressurized formation clamping device 100 according to one embodiment of the present invention includes two clamping units 110 arranged opposite to each other. Each clamping unit 110 includes a worktable 111, a first moving mechanism 112, a second moving mechanism 113, a third moving mechanism 114, a first lifting mechanism 115, a first clamping plate 116, a second lifting mechanism 117, and a second clamping plate 118.

[0031] The worktable 111 is used to support other components located on the worktable 111.

[0032] Among them, the first moving mechanism 112 moves along the first direction ( Figure 2 The X-direction section is located on one side of the workbench 111.

[0033] Among them, the second moving mechanism 113 moves along the second direction ( Figure 2 The first moving mechanism 112 (in the Y direction) is located on the side of the first moving mechanism 112 away from the worktable 111, and the second moving mechanism 113 can slide along the first moving mechanism 112. In this embodiment, the first direction and the second direction are perpendicular to each other.

[0034] The third moving mechanism 114 is disposed on one side of the second moving mechanism 113, and the third moving mechanism 114 can slide along the second moving mechanism 113.

[0035] The first lifting mechanism 115 is fixed to one side of the third moving mechanism 114, and the first lifting mechanism 115 can move in the direction of approaching or moving away from the worktable 111.

[0036] The first clamping plate 116 is used to abut against the electrode tab and is fixed to the side of the first lifting mechanism 115 away from the worktable 111. In this embodiment, when the first lifting mechanism 115 moves in a direction close to or away from the worktable 111, it can drive the first clamping plate 116 to contact the electrode tab and the battery cell, thereby adapting to electrode tabs and battery cells of different thicknesses.

[0037] The second lifting mechanism 117 is located on one side of the workbench 111 and can move in a direction that is close to or away from the workbench 111.

[0038] The second clamping plate 118 is used to abut against the battery cell, and the second clamping plate 118 is fixed to the side of the second lifting mechanism 117 away from the worktable 111. In this embodiment, when the second lifting mechanism 117 moves in a direction close to or away from the worktable 111, it can drive the second clamping plate 118 to contact the tab and the battery cell, thereby adapting to tabs and battery cells of different thicknesses.

[0039] When the lithium-ion battery pressurized formation clamping device 100 of this embodiment is applied, on the one hand, the second moving mechanism 113 can slide along the first moving mechanism 112, and the second moving mechanism 113 is slidably connected to the third moving mechanism 114, which can drive the first lifting mechanism 115 to move, and then drive the first clamping plate 116 to move. The combination of the first moving mechanism 112, the second moving mechanism 113 and the third moving mechanism 114 enables the lithium-ion battery pressurized formation clamping device 100 of this utility model to adapt to cells of different sizes. On the other hand, the first lifting mechanism 115 and the second lifting mechanism 117 can respectively drive the first clamping plate 116 and the second clamping plate 118 to contact the tabs and the cells, thereby adapting to tabs and cells of different thicknesses. Therefore, the lithium-ion battery pressurized formation clamping device 100 of this embodiment can effectively adapt to cells of various thicknesses and is not easily damaged, which is beneficial for its wide application.

[0040] Based on the aforementioned embodiment, there are two first moving mechanisms 112, and the two first moving mechanisms 112 are respectively located at both ends of the second moving mechanism 113 along the second direction. The two ends of the second moving mechanism 113 can slide along the two first moving mechanisms 112 respectively.

[0041] Based on the aforementioned embodiments, the first moving mechanism 112 includes a slide rail 1121 and a slider 1122. The slide rail 1121 is fixed to one side of the worktable 111, and the slider 1122 is slidably connected to the side of the slide rail 1121 away from the worktable 111. The two ends of the second moving mechanism 113 are respectively fixed to the sliders 1122 of the two first moving mechanisms 112. When the slider 1122 slides along the slide rail 1121, it can drive the second moving mechanism 113 to move. Furthermore, this utility model does not limit the fixing method of the slide rail 1121 to the worktable 111 or the sliding connection method of the slider 1122 to the slide rail 1121.

[0042] Based on the aforementioned embodiments, the third moving mechanism 114 includes a fixedly connected base 1141 and a side plate 1142. The base 1141 is disposed near the worktable 111, and the side plate 1142 can slide along the second moving mechanism 113. The base 1141 supports the first lifting mechanism 115, and the side plate 1142 drives the first lifting mechanism 115 to slide along the second moving mechanism 113. Furthermore, this invention does not limit the sliding connection method between the third moving mechanism 114 and the second moving mechanism 113. In one embodiment, the side plate 1142 has a protrusion on the side facing the second moving mechanism 113. The protrusion is tenon-and-mortise connected to the second moving mechanism 113, and the protrusion can slide along a second direction on the second moving mechanism 113.

[0043] Based on the aforementioned embodiment, one end of the first lifting mechanism 115 is fixed to the base 1141 of the third moving mechanism 114. At this time, when the third moving mechanism 114 slides along the second moving mechanism 113, it can drive the first lifting mechanism 115 to move.

[0044] Based on the aforementioned embodiment, the first lifting mechanism 115 is a first cylinder, which includes a first connecting rod 1151, and the first connecting rod 1151 is fixedly connected to the first clamping plate 116. When the lithium-ion battery pressurized formation clamping device 100 of this embodiment clamps the tabs and the battery cell, the extension distance and air pressure of the first cylinder can be adjusted to make the first clamping plate 116 contact the tabs and the battery cell, thereby adapting to tabs and battery cells of different thicknesses.

[0045] Based on the aforementioned embodiment, the second lifting mechanism 117 is fixed to the worktable 111. In this embodiment, the second lifting mechanism 117 is directly fixed to the worktable 111.

[0046] Based on the aforementioned embodiment, the second lifting mechanism 117 is a second cylinder, which includes a second connecting rod 1171, and the second connecting rod 1171 is fixedly connected to the second clamping plate 118. When the lithium-ion battery pressurized formation clamping device 100 of this embodiment clamps the tabs and the battery cell, the extension distance and air pressure of the second cylinder can be adjusted to make the second clamping plate 118 contact the tabs and the battery cell, thereby accommodating tabs and battery cells of different thicknesses.

[0047] Based on the aforementioned embodiments, the lithium-ion battery pressurized formation clamping device 100 of this embodiment further includes two first fixing members 119 for fixing the third moving mechanism 114, with the two first fixing members 119 respectively disposed on both sides of the third moving mechanism 114. When the third moving mechanism 114 slides to the target position, the two first fixing members 119 can be fixed to the worktable 111, respectively located on both sides of the third moving mechanism 114, thereby fixing the third moving mechanism 114. This invention does not limit the fixing method between the first fixing member 119 and the worktable 111. In one embodiment, the first fixing member 119 is fixedly connected to the worktable 111 by bolts.

[0048] In the lithium-ion battery pressurization and clamping device 100 of this embodiment, the second lifting mechanism 117 is directly fixed on the worktable 111, but the arrangement of the second lifting mechanism in the lithium-ion battery pressurization and clamping device of this utility model is not limited to this.

[0049] Please see Figure 3Another embodiment of the lithium-ion battery pressurized formation clamping device 200 includes two clamping units 210 arranged opposite to each other. Each clamping unit 210 includes a worktable 211, a first moving mechanism 212, a second moving mechanism 213, a third moving mechanism 214, a first lifting mechanism 215, a first clamping plate 216, a second lifting mechanism 217, and a second clamping plate 218.

[0050] The worktable 211 is used to support other components located on the worktable 211.

[0051] Among them, the first moving mechanism 212 moves along the first direction ( Figure 3 The X-direction section is located on one side of the worktable 211.

[0052] Among them, the second moving mechanism 213 moves along the second direction ( Figure 3 The second moving mechanism 213 is located on the side of the first moving mechanism 212 away from the worktable 211 in the Y direction, and the second moving mechanism 213 can slide along the first moving mechanism 212.

[0053] The third moving mechanism 214 is disposed on one side of the second moving mechanism 213, and the third moving mechanism 214 can slide along the second moving mechanism 213.

[0054] The first lifting mechanism 215 is fixed to one side of the third moving mechanism 214, and the first lifting mechanism 215 can move in the direction of approaching or moving away from the worktable 211.

[0055] The first clamping plate 216 is used to abut against the electrode tab and is fixed to the side of the first lifting mechanism 215 away from the worktable 211. In this embodiment, when the first lifting mechanism 215 moves in a direction close to or away from the worktable 211, it can drive the first clamping plate 216 to contact the electrode tab and the battery cell, thereby adapting to electrode tabs and battery cells of different thicknesses.

[0056] The second lifting mechanism 217 is located on one side of the worktable 211 and can move in a direction that is close to or away from the worktable 211.

[0057] The second clamping plate 218 is used to abut against the battery cell, and the second clamping plate 218 is fixed to the side of the second lifting mechanism 217 away from the worktable 211. In this embodiment, when the second lifting mechanism 217 moves in a direction close to or away from the worktable 211, it can drive the second clamping plate 218 to contact the tab and the battery cell, thereby adapting to tabs and battery cells of different thicknesses.

[0058] Furthermore, in this embodiment, there are two first moving mechanisms 212, and the two first moving mechanisms 212 are respectively located at both ends of the second moving mechanism 213 along the second direction. The two ends of the second moving mechanism 213 can slide along the two first moving mechanisms 212 respectively.

[0059] Furthermore, the first moving mechanism 212 includes a slide rail 2121 and a slider 2122. The slide rail 2121 is fixed to one side of the worktable 211, and the slider 2122 is slidably connected to the side of the slide rail 2121 away from the worktable 211. The two ends of the second moving mechanism 213 are respectively fixed to the sliders 2122 of the two first moving mechanisms 212. When the sliders 2122 slide along the slide rail 2121, they can drive the second moving mechanism 213 to move.

[0060] Furthermore, the third moving mechanism 214 includes a base 2141 and a side plate 2142 fixedly connected. The base 2141 is disposed near the worktable 211, and the side plate 2142 can slide along the second moving mechanism 213. The base 2141 is used to support the first lifting mechanism 215, and the side plate 2142 is used to drive the first lifting mechanism 215 to slide along the second moving mechanism 213.

[0061] Furthermore, one end of the first lifting mechanism 215 is fixed to the base 2141 of the third moving mechanism 214. At this time, when the third moving mechanism 214 slides along the second moving mechanism 213, it can drive the first lifting mechanism 215 to move.

[0062] Furthermore, the first lifting mechanism 215 is a first cylinder, which includes a first connecting rod 2151, and the first connecting rod 2151 is fixedly connected to the first clamping plate 216. When the lithium-ion battery pressurized formation clamping device 200 of this embodiment clamps the tabs and the battery cell, the extension distance and air pressure of the first cylinder can be adjusted to make the first clamping plate 216 contact the tabs and the battery cell, thereby accommodating tabs and battery cells of different thicknesses.

[0063] Furthermore, the lithium-ion battery pressurized formation clamping device 200 of this embodiment also includes a fourth moving mechanism 219, which is disposed on one side of the second moving mechanism 213, and the fourth moving mechanism 219 can slide along the second moving mechanism 213; the second lifting mechanism 217 is fixed on the fourth moving mechanism 219. By using the fourth moving mechanism 219 in this embodiment, the relative positions of the first lifting mechanism 215 and the second lifting mechanism 217 can be adjusted, which can accommodate tabs and cells of different sizes.

[0064] Furthermore, the second lifting mechanism 217 is a second cylinder, which includes a second connecting rod 2171, and the second connecting rod 2171 is fixedly connected to the second clamping plate 218. When the lithium-ion battery pressurized formation clamping device 200 of this embodiment clamps the tabs and the battery cell, the extension distance and air pressure of the second cylinder can be adjusted to make the second clamping plate 218 contact the tabs and the battery cell, thereby accommodating tabs and battery cells of different thicknesses.

[0065] Furthermore, the lithium-ion battery pressurized formation clamping device 200 of this embodiment may also include two second fixing members (not shown) for fixing the fourth moving mechanism 219, with the two second fixing members respectively disposed on both sides of the fourth moving mechanism 219. When the fourth moving mechanism 219 slides to the target position, the two second fixing members can be fixed to the worktable 211, respectively located on both sides of the fourth moving mechanism 219, thereby fixing the fourth moving mechanism 219. This invention does not limit the fixing method between the second fixing members and the worktable 211. In one embodiment, the second fixing members are fixedly connected to the worktable 211 using bolts.

[0066] When the lithium-ion battery pressurized formation clamping device 200 of this embodiment is applied, on the one hand, the second moving mechanism 213 can slide along the first moving mechanism 212, and the second moving mechanism 213 is slidably connected to the third moving mechanism 214, which can drive the first lifting mechanism 215 to move, and then drive the first clamping plate 216 to move. The combination of the first moving mechanism 212, the second moving mechanism 213 and the third moving mechanism 214 enables the lithium-ion battery pressurized formation clamping device 200 of this utility model to adapt to cells of different sizes. On the other hand, the first lifting mechanism 215 and the second lifting mechanism 217 can respectively drive the first clamping plate 216 and the second clamping plate 218 to contact the tabs and the cells, thereby adapting to tabs and cells of different thicknesses. Therefore, the lithium-ion battery pressurized formation clamping device 200 of this embodiment can effectively adapt to cells of various thicknesses and is not easily damaged, which is beneficial for its wide application.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lithium-ion battery pressurized formation clamping device, characterized in that, It includes two clamping units arranged opposite each other, each clamping unit comprising: Workbench; A first moving mechanism is disposed on one side of the worktable along a first direction; The second moving mechanism is disposed along the second direction on the side of the first moving mechanism away from the worktable, and the second moving mechanism can slide along the first moving mechanism; A third moving mechanism is disposed on one side of the second moving mechanism, and the third moving mechanism can slide along the second moving mechanism; The first lifting mechanism is fixed to one side of the third moving mechanism, and the first lifting mechanism can move in a direction that is closer to or farther away from the worktable; The first clamping plate is used to abut against the electrode tab, and the first clamping plate is fixed to the side of the first lifting mechanism away from the worktable; A second lifting mechanism is disposed on one side of the worktable, and the second lifting mechanism can move in a direction toward or away from the worktable; and The second clamping plate is used to abut against the battery cell, and the second clamping plate is fixed to the side of the second lifting mechanism away from the worktable.

2. The lithium-ion battery pressurized formation clamping device according to claim 1, characterized in that, There are two first moving mechanisms, and the two first moving mechanisms are located at opposite ends of the second moving mechanism along the second direction.

3. The lithium-ion battery pressurized formation clamping device according to claim 1, characterized in that, The first moving mechanism includes a slide rail and a slider. The slide rail is fixed to one side of the worktable, and the slider is slidably connected to the side of the slide rail away from the worktable.

4. The lithium-ion battery pressurized formation clamping device according to claim 1, characterized in that, The third moving mechanism includes a fixedly connected base and a side plate. The base is located close to the worktable, and the side plate can slide along the second moving mechanism.

5. The lithium-ion battery pressurized formation clamping device according to claim 4, characterized in that, One end of the first lifting mechanism is fixed to the base of the third moving mechanism.

6. The lithium-ion battery pressurized formation clamping device according to claim 1 or 5, characterized in that, The first lifting mechanism is a first cylinder, which includes a first connecting rod and is fixedly connected to the first clamping plate.

7. The lithium-ion battery pressurized formation clamping device according to claim 1, characterized in that, The second lifting mechanism is fixed to the worktable.

8. The lithium-ion battery pressurized formation clamping device according to claim 1, characterized in that, It also includes a fourth moving mechanism, which is disposed on one side of the second moving mechanism and can slide along the second moving mechanism; the second lifting mechanism is fixed on the fourth moving mechanism.

9. The lithium-ion battery pressurized formation clamping device according to any one of claims 1, 7, or 8, characterized in that, The second lifting mechanism is a second cylinder, which includes a second connecting rod and is fixedly connected to the second clamping plate.

10. The lithium-ion battery pressurized formation clamping device according to claim 1, characterized in that, It also includes two first fixing members for fixing the third moving mechanism, and the two first fixing members are respectively disposed on both sides of the third moving mechanism.

Images